Lewis j



(No Model.)

L. J. ATWOOD.

ARGAND LAMP.

No. 887,758. Patented Aug. 14, 1888.

iUNiTen STATES PATENT @Triest LEVIS J. ATWOOD, OF VATERBURY,CONNECTICUT, ASSIGNOB TO THE PLUME t H ATWOOD hl ANUFACTURNG COMPANY, OFSAME PLACE.

ARGAND LAM P.

SPECIFICATION forming part of Letters Patent No. 387,756, dated August14. 1883- Appliention filed Jununry. i888.

To all whom il; may concern:

Be it known that I, LEWIS J. ATWOOD, of Vaterbury, in the county of NewHaven and State of Connecticut, have invented an Improvenientin ArgandLamps, of which thoi'oll lowing is a specification.

Argand lamps have heretofore been construeted in which a cylindricalwick is received between a central airAtube and au exterior tube orcase, usually known as the wicktnbe,7 and a button or detiector has beenprovided at the upper end ot' the air-tube and within the llame. Inlamps of this character ditiienlty often arises from the kerosene orother oil percoiating down the air-tube into the drip cup at the bottomthereof. This arises most frequently when a carbonaceous crust is formedupon the upper end of the airtube, and when pieces of carbon adhere tothe interior ot' such air-tube, near the top end thereof, and'aet todraw over the oil from the wick by capillary attraction.

My present invention is intended to prevent this difticulty; and itconsists in a supplemental air-tube that catches and returns into thelainprcservoir any oil that might otherwise run down into the drip-cupor the base of the lamp.

In the drawings, Figure l is a vertical seetion representingaportion ofan Argand lamp, and showing the wick-tube, air-tube. supple mentalaintube, and deflector; and Fig. 2 isa sectional plan view at the linea;

The rescrvoi r A of the lamp is of any desired shape or size, and theair-tube B passes vertically through the reservoir, and it is open atthe lower end and united with the reservoir, so that oil will not leakat the joint. The wick is cylindricahor a llat wiel; bent into acylindrical t'orm, und it occupies the space between the air-tube B andthe wick-tube D, and this Wicktube D may only extend above thereservoir, or it may pass down into said reservoir, and the devices forraising and lowering the wick may be of any desired character. TWithinthe air-tube is a supplemental ai r-tube, E, the lower end of which issniiiciently large to be in Contact with the exterior of the airtube B,and at this point thesupplelnentnl airtube is soldered tightly to theair-tube. This Serial No. 259,006. (No model.)

supplemental airtube E tapers slightly, so that its upper end isataslight distance Within the upper end of the air-tube B; hence any oilthat may pass over the top of the air-tube B will run down into thespacebetween such airtube B and the supplemental air-tube E, and one ormore openings are provided, suoli as at F, in the air-tube, so that theoil may return through suoli openings into the reservoir of the lamp.

The upper part of the air-tube B, between the supplemental air-tube Bandthe wick, may be more or less perforated, as desired, and by preferenceit is made as a xture; but it might be removable vertically tofacilitate the cleaning of the lamp. At the upper end of thissupplemental air-tube E there is a ameregnlator, which I prefer to makeas a foraminons skirt, G, resting upon the top of the supplementalairtube,with a ledge to retain the same in the proper position, and thedefiector H is in the form of a dish or button head at the top of thisforaminous skirt G.

It will now be understood that the top end of the wick being outside theair-tube B cannot come into contact with either the supplementalair-tube E or the foraminous skirt G, and the Haine will burn above thetop edge ofthe air-tube,and it will be supplied with air and deflectedoutwardly by the air that passes up through the supplemental air tubeand through the perforations of the skirt G, and these perforationsbeing fine the currents of air will be subdivided and. will reach thetiame with uniformity, so that the combustion will be perfect.

It is to be understood that any suitable de tlcctor outside thewick-tube and a chimneyholder and chimney are to be used in connectionwith the present improvement.

l claim as my inventionl. The combination, in an Argand lamp, with the\vick-tubc D,ol" the air-tube B,extending through the fount andconnected at its lower end tothe same and perforated about midway ofitslength,'and the supplemental air tube E within the air-tube B,andrigidly fastened thereto at its lower end, said tube E being taperingand imperforate, its upper end being smaller than the air-tube B, sothat an IOC) annular Space is formed between the parts to annular spaceis formed between the parts to catch overflowing oil 'and return it tothe rescatch overflowing oil and return it to the reservoir,substantially as specified. ervoir, the extreme upper end of the tube El5 2. The combination, in au Argztnd lamp, being formed with a, ledge oroffset which is 5 with the welrtube D',ofthe air-tube B,eXtend adaptedto support a foraminous skirt and deing through the fount and connectedat its Hector, substantiallyas set forth. lower end to the saine, andperforated about Signed by me this 29th day of December, midwayofitslength, aud the supplemental air- 1887.

tube Ewithin the air-tube B, and rigidly fast- LEVIS J. AT\VOOD. Io enedthereto at its lower end, said tube E be- T'Vitnesses:

ing tapering and imperforate, its upper end GEO. T. PINCKNEY,

being smaller than the air-tube B, so that au WILLIAM G. Mo'r'r.

